<?php

class BackupController extends Controller
{
	/**
	 * @var string the default layout for the views. Defaults to '//layouts/column2', meaning
	 * using two-column layout. See 'protected/views/layouts/column2.php'.
	 */
	public $layout='//layouts/column2';

	/**
	 * @return array action filters
	 */
	public function filters()
	{
		return array(
			'accessControl', // perform access control for CRUD operations
		);
	}

	/**
	 * Specifies the access control rules.
	 * This method is used by the 'accessControl' filter.
	 * @return array access control rules
	 */
	public function accessRules()
	{
		return array(
			array('allow',  // allow all users to perform 'index' and 'view' actions
				'actions'=>array('index','view'),
				'users'=>array('*'),
			),
			array('allow', // allow authenticated user to perform 'create' and 'update' actions
				'actions'=>array('create','update'),
				'users'=>array('@'),
			),
			array('allow', // allow admin user to perform 'admin' and 'delete' actions
				'actions'=>array('admin','delete', 'restore'),
				//'users'=>array('admin'),
				'users'=>array('@'),
			),
			array('deny',  // deny all users
				'users'=>array('*'),
			),
		);
	}

	/**
	 * Displays a particular model.
	 * @param integer $id the ID of the model to be displayed
	 */
	public function actionView($id)
	{
		$this->render('view',array(
			'model'=>$this->loadModel($id),
		));
	}

	/**
	 * Creates a new model.
	 * If creation is successful, the browser will be redirected to the 'view' page.
	 */
	public function actionCreate()
	{
		$model=new Backup;

		// Uncomment the following line if AJAX validation is needed
		// $this->performAjaxValidation($model);

		if(isset($_POST['Backup']))
		{
			$model->attributes=$_POST['Backup'];
			if($model->save())
				$this->redirect(array('view','id'=>$model->file_id));
		}

        $filename = $this->createBackup();
			
			$this->render('create',array(
				'model'=>$model,
				'createBackup'=> true,
				'file' => $filename,
			));
		
		/*	
		$this->render('create',array(
			'model'=>$model,
		));*/
	}

	/**
	 * Updates a particular model.
	 * If update is successful, the browser will be redirected to the 'view' page.
	 * @param integer $id the ID of the model to be updated
	 */
	public function actionUpdate($id)
	{
		$model=$this->loadModel($id);

		// Uncomment the following line if AJAX validation is needed
		// $this->performAjaxValidation($model);

		if(isset($_POST['Backup']))
		{
			$model->attributes=$_POST['Backup'];
			if($model->save())
				$this->redirect(array('view','id'=>$model->file_id));
		}

		$this->render('update',array(
			'model'=>$model,
		));
	}

	/**
	 * Deletes a particular model.
	 * If deletion is successful, the browser will be redirected to the 'admin' page.
	 * @param integer $id the ID of the model to be deleted
	 */
	public function actionDelete($id)
	{
		if(Yii::app()->request->isPostRequest)
		{
			// we only allow deletion via POST request
			$this->loadModel($id)->delete();

			// if AJAX request (triggered by deletion via admin grid view), we should not redirect the browser
			if(!isset($_GET['ajax']))
				$this->redirect(isset($_POST['returnUrl']) ? $_POST['returnUrl'] : array('admin'));
		}
		else
			throw new CHttpException(400,'Invalid request. Please do not repeat this request again.');
	}

	/**
	 * Lists all models.
	 */
	public function actionIndex()
	{
		$dataProvider=new CActiveDataProvider('Backup');
		$this->render('index',array(
			'dataProvider'=>$dataProvider,
		));
	}

	/**
	 * Manages all models.
	 */
	public function actionAdmin()
	{		
		$model=new Backup('search');
		$model->unsetAttributes();  // clear any default values
		if(isset($_GET['Backup']))
			$model->attributes=$_GET['Backup'];

		$this->render('admin',array(
			'model'=>$model,
		));
			
	}
	
	public function createBackup() {
		//mysqldump ---user [user name] ---password=[password] [database name] > [dump file]
		// return table name with DB name to get relations from different DBs to work
        $path= Yii::app()->basePath . '/../backup';
		$mysqlbin_path = '/Applications/MAMP/Library/bin';
		
		if (!is_dir($path)) {
			mkdir($path);
		}
		
		$path .= '/' . date("Y-m");
		
		if (!is_dir($path)) {
			mkdir($path);
		}
		
		$file  = 'gnsystem-'.date("Ymd-His").'.sql';
		$filename = "$path/$file";
		
        $data = explode("=", Yii::app()->db->connectionString);
		$dbname = $data[2];
	
		$cmd  = "$mysqlbin_path/mysqldump --user=".Yii::app()->db->username." --password=".Yii::app()->db->password;
		$cmd .= " $dbname gn_users gn_members gn_member_status gn_products gn_sales gn_payouts gn_audit_trail gn_regions gn_provinces > $filename" ;
		
		//echo $cmd;
	    $last_line = system($cmd, $retval);
		return $this->recordBackup($filename);
	}
	
	public function actionRestore() {
		
		$file_id = $_GET['id'];
	    $backup = Backup::model()->findByPk($file_id);
		
		//print_r ($backup);
		if ($backup->filename) {
			
		  if (file_exists($backup->filename)){
			  $mysqlbin_path = '/Applications/MAMP/Library/bin';
			  $data = explode("=", Yii::app()->db->connectionString);
			  $dbname = $data[2];
			  $cmd  = "$mysqlbin_path/mysql --user=".Yii::app()->db->username." --password=".Yii::app()->db->password;
			  $cmd .= " $dbname < ". $backup->filename ;
			  $last_line = system($cmd, $retval);
			  
			  $this->render('restore',array(
				'success'=> "Restore Complete.",
				'file'=> $backup->filename,
			));
		  }
		  else {
		  	$this->render('restore',array(
				'error'=> "Backup File is missing. Please contact support (support@tekmonkeys.com).",
				'file'=> $backup->filename,
			));
		  }
		  
		}
		else {
			//return;  
			$this->render('restore',array(
				'error'=> "Backup File Error. Please contact support (support@tekmonkeys.com).",
			));
		}
	}
	
	public function recordBackup($file) {
		
		if (file_exists($file)) {
		  $sql = "INSERT into gn_backup_files SET filename='$file', ts_created=CURRENT_TIMESTAMP(), user_id=".Yii::app()->user->getId();
		  $connection = Yii::app()->db;
		  $command = $connection->createCommand($sql);
	      $dataReader = $command->query();	  	
		  return $file;
		}
		else { return false; }
	}
	

	/**
	 * Returns the data model based on the primary key given in the GET variable.
	 * If the data model is not found, an HTTP exception will be raised.
	 * @param integer the ID of the model to be loaded
	 */
	public function loadModel($id)
	{
		$model=Backup::model()->findByPk($id);
		if($model===null)
			throw new CHttpException(404,'The requested page does not exist.');
		return $model;
	}

	/**
	 * Performs the AJAX validation.
	 * @param CModel the model to be validated
	 */
	protected function performAjaxValidation($model)
	{
		if(isset($_POST['ajax']) && $_POST['ajax']==='backup-form')
		{
			echo CActiveForm::validate($model);
			Yii::app()->end();
		}
	}
}
